I do walking meditation. I walk slowly around-&-around our townhome, keeping light attention on my feet. Thoughts come-&-go. When I notice I'm thinking about something I just gently say to myself: "thinking". Sometimes I'll do this for as much as two hours at a time... until my legs & hips ache. I suppose one could say that there is a bit of an OCD element to it. But I like it...